The A/C guy told me that the price of "freon" R-22 has gone up from $18 pound to $40 pound since February as the supply is dwindling and their company will not be able to install R-22 after about January, should our A/C's need it. The cost of R-22 is starting to skyrocket as demand exceeds supply (they don't make it anymore, just recover and recycle it). The old style A/C that uses R-22 are still being sold on the market, builders are still instaling them in new construction, but they will be obsolete as the new kind of A/C with the new kind of refrigerant is not compatible with the current A/C models. This switch will eventually affect every home, business, and institution in the US, yet we consumers have heard nothing about it. Apparently, this is something to do with the Montreal agreement Clinton signed when he was in office, from what I could find out. Here is some information from the EPA: http://www.epa.gov/ozone/title6/phaseout/22phaseout.html My advice to those who are considering replacing their central A/C units - go with the new model that uses R-410A. Any heating & cooling experts out there to give advice? What's up with the media not letting the public know about this?